<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div id="app">
        <myheader></myheader>
    </div>
    <script>
        Vue.component("myheader", {
            template: `
        <div>
            <h1>{{ title }}</h1>        
    </div>
        
        `,
            data() {
                return {
                    title: "小米"
                }
            }
        })
        new Vue({
            el: "#app",
        })
    </script>
</body>

</html>